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/**
* Copyright 2005-2007 ECMWF
*
* Licensed under the GNU Lesser General Public License which
* incorporates the terms and conditions of version 3 of the GNU
* General Public License.
* See LICENSE and gpl-3.0.txt for details.
*/
#include "grib_api_internal.h"
/*
This is used by make_class.pl
START_CLASS_DEF
CLASS = accessor
SUPER = grib_accessor_class_data_simple_packing
IMPLEMENTS = init
IMPLEMENTS = unpack_double
IMPLEMENTS = pack_double
IMPLEMENTS = unpack_double_element
IMPLEMENTS = value_count
MEMBERS=const char* type_of_compression_used
MEMBERS=const char* target_compression_ratio
MEMBERS=const char* ni
MEMBERS=const char* nj
MEMBERS=const char* list_defining_points
MEMBERS=const char* number_of_data_points
MEMBERS=const char* scanning_mode
MEMBERS=int jpeg_lib
MEMBERS=const char* dump_jpg
END_CLASS_DEF
*/
/* START_CLASS_IMP */
/*
Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
Instead edit values between START_CLASS_DEF and END_CLASS_DEF
or edit "accessor.class" and rerun ./make_class.pl
*/
static int pack_double(grib_accessor*, const double* val,size_t *len);
static int unpack_double(grib_accessor*, double* val,size_t *len);
static long value_count(grib_accessor*);
static void init(grib_accessor*,const long, grib_arguments* );
static void init_class(grib_accessor_class*);
static int unpack_double_element(grib_accessor*,size_t i, double* val);
typedef struct grib_accessor_data_jpeg2000_packing {
grib_accessor att;
/* Members defined in gen */
/* Members defined in values */
int carg;
const char* seclen;
const char* offsetdata;
const char* offsetsection;
int dirty;
/* Members defined in data_simple_packing */
const char* units_factor;
const char* units_bias;
const char* changing_precision;
const char* number_of_values;
const char* bits_per_value;
const char* reference_value;
const char* binary_scale_factor;
const char* decimal_scale_factor;
/* Members defined in data_jpeg2000_packing */
const char* type_of_compression_used;
const char* target_compression_ratio;
const char* ni;
const char* nj;
const char* list_defining_points;
const char* number_of_data_points;
const char* scanning_mode;
int jpeg_lib;
const char* dump_jpg;
} grib_accessor_data_jpeg2000_packing;
extern grib_accessor_class* grib_accessor_class_data_simple_packing;
static grib_accessor_class _grib_accessor_class_data_jpeg2000_packing = {
&grib_accessor_class_data_simple_packing, /* super */
"data_jpeg2000_packing", /* name */
sizeof(grib_accessor_data_jpeg2000_packing), /* size */
0, /* inited */
&init_class, /* init_class */
&init, /* init */
0, /* post_init */
0, /* free mem */
0, /* describes himself */
0, /* get length of section */
&value_count, /* get number of values */
0, /* get number of bytes */
0, /* get offset to bytes */
0, /* get native type */
0, /* get sub_section */
0, /* grib_pack procedures long */
0, /* grib_pack procedures long */
0, /* grib_pack procedures long */
0, /* grib_unpack procedures long */
&pack_double, /* grib_pack procedures double */
&unpack_double, /* grib_unpack procedures double */
0, /* grib_pack procedures string */
0, /* grib_unpack procedures string */
0, /* grib_pack procedures bytes */
0, /* grib_unpack procedures bytes */
0, /* pack_expression */
0, /* notify_change */
0, /* update_size */
0, /* preferred_size */
0, /* resize */
0, /* nearest_smaller_value */
0, /* next accessor */
0, /* compare vs. another accessor */
&unpack_double_element, /* unpack only ith value */
0, /* clear */
};
grib_accessor_class* grib_accessor_class_data_jpeg2000_packing = &_grib_accessor_class_data_jpeg2000_packing;
static void init_class(grib_accessor_class* c)
{
c->dump = (*(c->super))->dump;
c->next_offset = (*(c->super))->next_offset;
c->byte_count = (*(c->super))->byte_count;
c->byte_offset = (*(c->super))->byte_offset;
c->get_native_type = (*(c->super))->get_native_type;
c->sub_section = (*(c->super))->sub_section;
c->pack_missing = (*(c->super))->pack_missing;
c->is_missing = (*(c->super))->is_missing;
c->pack_long = (*(c->super))->pack_long;
c->unpack_long = (*(c->super))->unpack_long;
c->pack_string = (*(c->super))->pack_string;
c->unpack_string = (*(c->super))->unpack_string;
c->pack_bytes = (*(c->super))->pack_bytes;
c->unpack_bytes = (*(c->super))->unpack_bytes;
c->pack_expression = (*(c->super))->pack_expression;
c->notify_change = (*(c->super))->notify_change;
c->update_size = (*(c->super))->update_size;
c->preferred_size = (*(c->super))->preferred_size;
c->resize = (*(c->super))->resize;
c->nearest_smaller_value = (*(c->super))->nearest_smaller_value;
c->next = (*(c->super))->next;
c->compare = (*(c->super))->compare;
c->clear = (*(c->super))->clear;
}
/* END_CLASS_IMP */
static int first = 1;
#define JASPER_LIB 1
#define OPENJPEG_LIB 2
static void init(grib_accessor* a,const long v, grib_arguments* args)
{
const char * user_lib=NULL;
grib_accessor_data_jpeg2000_packing *self =(grib_accessor_data_jpeg2000_packing*)a;
self->type_of_compression_used = grib_arguments_get_name(a->parent->h,args,self->carg++);
self->target_compression_ratio = grib_arguments_get_name(a->parent->h,args,self->carg++);
self->ni = grib_arguments_get_name(a->parent->h,args,self->carg++);
self->nj = grib_arguments_get_name(a->parent->h,args,self->carg++);
self->list_defining_points = grib_arguments_get_name(a->parent->h,args,self->carg++);
self->number_of_data_points = grib_arguments_get_name(a->parent->h,args,self->carg++);
self->scanning_mode = grib_arguments_get_name(a->parent->h,args,self->carg++);
a->flags |= GRIB_ACCESSOR_FLAG_DATA;
#if HAVE_LIBJASPER
self->jpeg_lib=JASPER_LIB;
#elif HAVE_LIBOPENJPEG
self->jpeg_lib=OPENJPEG_LIB;
#endif
if ((user_lib=getenv("GRIB_JPEG"))!=NULL ) {
if (!strcmp(user_lib,"jasper")) {
self->jpeg_lib=JASPER_LIB;
} else if (!strcmp(user_lib,"openjpeg")) {
self->jpeg_lib=OPENJPEG_LIB;
}
}
self->dump_jpg = getenv("GRIB_DUMP_JPG_FILE");
if(first) {
if(self->dump_jpg)
printf("GRIB JPEG dumping to %s\n",self->dump_jpg);
first = 0;
}
}
static long value_count(grib_accessor* a)
{
grib_accessor_data_jpeg2000_packing *self =(grib_accessor_data_jpeg2000_packing*)a;
long n_vals= 0;
if(grib_get_long_internal(a->parent->h,self->number_of_values,&n_vals) != GRIB_SUCCESS)
return 0;
return n_vals;
}
#define EXTRA_BUFFER_SIZE 10240
#ifdef HAVE_JPEG
static int unpack_double(grib_accessor* a, double* val, size_t *len)
{
grib_accessor_data_jpeg2000_packing *self =(grib_accessor_data_jpeg2000_packing*)a;
int err = GRIB_SUCCESS;
int i;
size_t buflen = grib_byte_count(a);
double bscale = 0;
double dscale = 0;
unsigned char* buf = NULL;
size_t n_vals = 0;
long binary_scale_factor = 0;
long decimal_scale_factor = 0;
double reference_value = 0;
long bits_per_value =0;
double units_factor=1.0;
double units_bias=0.0;
n_vals = grib_value_count(a);
if(self->units_factor)
grib_get_double_internal(a->parent->h,self->units_factor,&units_factor);
if(self->units_bias)
grib_get_double_internal(a->parent->h,self->units_bias,&units_bias);
if((err = grib_get_long_internal(a->parent->h,self->bits_per_value,&bits_per_value)) != GRIB_SUCCESS)
return err;
if((err = grib_get_double_internal(a->parent->h,self->reference_value, &reference_value)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->binary_scale_factor, &binary_scale_factor)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->decimal_scale_factor, &decimal_scale_factor)) != GRIB_SUCCESS)
return err;
self->dirty=0;
bscale = grib_power(binary_scale_factor,2);
dscale = grib_power(-decimal_scale_factor,10);
/* TODO: This should be called upstream */
if(*len < n_vals)
return GRIB_ARRAY_TOO_SMALL;
/* Special case */
if(bits_per_value == 0)
{
for(i = 0; i < n_vals; i++)
val[i] = reference_value;
*len = n_vals;
return GRIB_SUCCESS;
}
buf = (unsigned char*)a->parent->h->buffer->data;
buf += grib_byte_offset(a);
switch (self->jpeg_lib) {
case OPENJPEG_LIB:
if ((err = grib_openjpeg_decode(a->parent->h->context,buf,&buflen,val,&n_vals)) != GRIB_SUCCESS)
return err;
break;
case JASPER_LIB:
if ((err = grib_jasper_decode(a->parent->h->context,buf,&buflen,val,&n_vals)) != GRIB_SUCCESS)
return err;
break;
}
*len = n_vals;
for (i = 0; i < n_vals; i++) {
val[i] = (val[i] * bscale + reference_value) * dscale;
}
if (units_factor != 1.0) {
if (units_bias != 0.0)
for (i=0;i<n_vals;i++) val[i]=val[i]*units_factor+units_bias;
else
for (i=0;i<n_vals;i++) val[i]*=units_factor;
} else if (units_bias != 0.0)
for (i=0;i<n_vals;i++) val[i]+=units_bias;
return err;
}
static int pack_double(grib_accessor* a, const double* cval, size_t *len)
{
grib_accessor_data_jpeg2000_packing *self =(grib_accessor_data_jpeg2000_packing*)a;
grib_accessor_class* super = *(a->cclass->super);
size_t n_vals = *len;
int err = 0;
int i;
double reference_value = 0;
long binary_scale_factor = 0;
long bits_per_value = 0;
long decimal_scale_factor = 0;
double decimal = 1;
size_t simple_packing_size = 0;
unsigned char* buf = NULL;
double divisor = 1;
long width;
long height;
long ni;
long nj;
long target_compression_ratio;
long type_of_compression_used;
long scanning_mode;
long list_defining_points;
long number_of_data_points;
int ret =0;
j2k_encode_helper helper;
double units_factor=1.0;
double units_bias=0.0;
double* val=(double*)cval;
self->dirty=1;
if(*len == 0){
grib_buffer_replace(a, NULL, 0, 1, 1);
return GRIB_SUCCESS;
}
if(self->units_factor &&
(grib_get_double_internal(a->parent->h,self->units_factor,&units_factor)== GRIB_SUCCESS)) {
grib_set_double_internal(a->parent->h,self->units_factor,1.0);
}
if(self->units_bias &&
(grib_get_double_internal(a->parent->h,self->units_bias,&units_bias)== GRIB_SUCCESS)) {
grib_set_double_internal(a->parent->h,self->units_bias,0.0);
}
if (units_factor != 1.0) {
if (units_bias != 0.0)
for (i=0;i<n_vals;i++) val[i]=val[i]*units_factor+units_bias;
else
for (i=0;i<n_vals;i++) val[i]*=units_factor;
} else if (units_bias != 0.0)
for (i=0;i<n_vals;i++) val[i]+=units_bias;
ret = super->pack_double(a,val,len);
switch (ret) {
case GRIB_CONSTANT_FIELD:
grib_buffer_replace(a, NULL, 0,1,1);
return GRIB_SUCCESS;
break;
case GRIB_SUCCESS:
break;
default:
grib_context_log(a->parent->h->context,GRIB_LOG_ERROR,"unable to compute packing parameters\n");
return ret;
}
if((ret = grib_get_double_internal(a->parent->h,self->reference_value, &reference_value))
!= GRIB_SUCCESS)
return ret;
if((ret = grib_get_long_internal(a->parent->h,self->binary_scale_factor, &binary_scale_factor))
!= GRIB_SUCCESS)
return ret;
if((ret = grib_get_long_internal(a->parent->h,self->bits_per_value,&bits_per_value)) !=
GRIB_SUCCESS)
return ret;
if((ret = grib_get_long_internal(a->parent->h,self->decimal_scale_factor, &decimal_scale_factor))
!= GRIB_SUCCESS)
return ret;
decimal = grib_power(decimal_scale_factor,10) ;
divisor = grib_power(-binary_scale_factor,2);
simple_packing_size = (((bits_per_value*n_vals)+7)/8)*sizeof(unsigned char);
buf = grib_context_malloc_clear(a->parent->h->context,simple_packing_size+EXTRA_BUFFER_SIZE);
if(!buf) {
err = GRIB_OUT_OF_MEMORY;
goto cleanup;
}
if((err = grib_get_long_internal(a->parent->h,self->ni,&ni)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->nj,&nj)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->type_of_compression_used,&type_of_compression_used)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->target_compression_ratio,&target_compression_ratio)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->scanning_mode,&scanning_mode)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->list_defining_points,&list_defining_points)) != GRIB_SUCCESS)
return err;
if((err = grib_get_long_internal(a->parent->h,self->number_of_data_points,&number_of_data_points)) != GRIB_SUCCESS)
return err;
width = ni;
height = nj;
if((scanning_mode & (1<<5)) != 0)
{
long tmp = width;
width = height;
height = tmp;
}
/* The grid is not regular */
if(list_defining_points != 0)
{
width = *len;
height = 1;
}
/* There is a bitmap */
if(*len != number_of_data_points)
{
width = *len;
height = 1;
}
if(width*height != *len)
{
/* fprintf(stderr,"width=%ld height=%ld len=%d\n",(long)width,(long)height,(long)*len); */
Assert(width*height == *len);
}
switch( type_of_compression_used)
{
case 0:
Assert(target_compression_ratio == 255);
helper.compression = 0;
break;
case 1:
Assert(target_compression_ratio != 255);
Assert(target_compression_ratio != 0);
helper.compression = target_compression_ratio;
break;
default:
err = GRIB_NOT_IMPLEMENTED;
goto cleanup;
}
helper.jpeg_buffer = buf;
helper.width = width;
helper.height = height;
helper.bits_per_value = bits_per_value;
helper.buffer_size = simple_packing_size + EXTRA_BUFFER_SIZE;
helper.values = val;
helper.no_values = n_vals;
helper.reference_value = reference_value;
helper.divisor = divisor;
helper.decimal = decimal;
switch (self->jpeg_lib) {
case OPENJPEG_LIB:
if ( (err = grib_openjpeg_encode(a->parent->h->context,&helper)) != GRIB_SUCCESS ) goto cleanup;
break;
case JASPER_LIB:
if ( (err = grib_jasper_encode(a->parent->h->context,&helper)) != GRIB_SUCCESS ) goto cleanup;
break;
}
if(helper.jpeg_length > simple_packing_size)
grib_context_log(a->parent->h->context, GRIB_LOG_WARNING,
"grib_accessor_data_jpeg2000_packing(%s) : jpeg data (%ld) larger than input data (%ld)",
self->jpeg_lib==OPENJPEG_LIB ? "openjpeg" : "jasper",
helper.jpeg_length, simple_packing_size);
Assert( helper.jpeg_length <= helper.buffer_size);
if(self->dump_jpg) {
FILE *f = fopen(self->dump_jpg,"w");
if(f) {
if(fwrite(helper.jpeg_buffer,helper.jpeg_length,1,f) != 1)
perror(self->dump_jpg);
fclose(f);
}
else perror(self->dump_jpg);
}
grib_buffer_replace(a, helper.jpeg_buffer, helper.jpeg_length, 1, 1);
cleanup:
grib_context_free(a->parent->h->context,buf);
if(err == GRIB_SUCCESS)
err = grib_set_long_internal(a->parent->h,self->number_of_values, *len);
return err;
}
#else
static int unpack_double(grib_accessor* a, double* val, size_t *len)
{
grib_context_log(a->parent->h->context, GRIB_LOG_ERROR,
"jpeg support not enabled. Please rerun configure with the --with-jasper or --with-openjpeg option.");
return GRIB_NOT_IMPLEMENTED;
}
static int pack_double(grib_accessor* a, const double* val, size_t *len)
{
grib_context_log(a->parent->h->context, GRIB_LOG_ERROR,
"jpeg support not enabled. Please rerun configure with the --with-jasper or --with-openjpeg option.");
return GRIB_NOT_IMPLEMENTED;
}
#endif
static int unpack_double_element(grib_accessor* a, size_t idx, double* val)
{
size_t size;
double* values;
int err=0;
err=grib_get_size(a->parent->h,"values",&size);
if (err) return err;
if (idx > size) return GRIB_INVALID_NEAREST;
values=grib_context_malloc_clear(a->parent->h->context,size*sizeof(double));
err=grib_get_double_array(a->parent->h,"values",values,&size);
if (err) return err;
*val=values[idx];
grib_context_free(a->parent->h->context,values);
return err;
}
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